Why do the properties of elements change in a regular way across a period

Match the element of fiction with its definition. 1. Plot 2. Setting 3. Conflict 4. Character 5. Theme Answer A. Acts to overcome obstacles B. Builds the tension between or within characters C. Establishes an order of events D.

Which of the following is an example of an alloy? 1. vanadium 2. nichrome 3. chromium 3. nickel

Determine the molal concentration of 71.5 g of linoleic acid, C12H3202, in 525 g of hexane, C6H14.

Eric carries out the same chemical reaction 10 times the maximum temperatures the reaction system attained is shown on the right The mean maximum temperature the system attained was

Write a equation for the formation of ions as HCI dissolves in and reacts with water, then name each ion formed

Which of the following statements about transition metals is true? a. They are never found uncombined in nature. b. They include familiar metals such as gold, silver, copper, and nickel. c.

Elements can be separated from one another. Question 6 options: True False

One gram of lipid yields about 9kcal of energy. that is due to the high abundance of which chemical element?

Which of the following happens during a chemical change? Check all of the boxes that apply 0 One atom or more changes into atoms of another element. New substances with different properties are formed. O Solids, liquids, or gases may form.

The energy derived from the movement of H + ions down an electrochemical gradient from the intermembrane space into the matrix is used to drive the synthesis of ATP. How many H + ions must be moved into the matrix for the synthesis of 1 ATP?